Ingenious improvement of a gold printing process
As we all know, gold ink printability is not very good, prone to various types of failure, and difficult to solve. However, due to the special coloring effect of gold ink, it is still widely used. How to print gold and silver ink has become a problem that our printing workers must solve. I have done some research and experimentation in many years of printing work and gained some experience. This article will use a more typical book printing example to communicate with the majority of friends, in order to attract jade. Not long ago, we printed the "Gao Yun" album of Jiangsu Fine Arts Publishing House. The album has a total of 10 posts, and the paper is 128g/m2 matte coated paper. The blank parts of each painting are covered with gold ink, and many black characters are superimposed on the gold ink. We use four-color machine printing, and the positive and negative 10 colors must be printed 4 times to complete. After preliminary analysis, the gold is printed first, and then the four primary colors are printed. When the gold is printed and the counter is reversed, there are three problems: (1) Printing a large area of ​​gold ink on matt coated paper is not easy to dry. Due to the poor adhesion of gold ink, various forms of powder falling and smashing are inevitable in the process of printing, folding and binding, which will seriously affect the quality of the album; (2) the gloss of the gold ink layer is too strong, and The color of the Chinese painting in the album is not harmonious, and the customer feels very dissatisfied; (3) Because of the characteristics of the gold ink and the inability to dry immediately, the black letters overprinted must be faint. At that time, I thought: I should wear a gold plate and reprint a bright light paste on the gold ground to protect the gold ink from dust and scratches. But doing so makes the gold ink brighter and the customer is less satisfied. Can think again: the film material has a bright film, matt film, the same reason, with a bright light paste, there must be an oil agent such as matte paste, so quickly searched the Internet, the results found that Hanghua ink factory extinction Oil can be used. After buying the matting oil, we used two gold plates, the first color group printed gold, the latter color group printed matting oil, the printed gold is indeed a lot dark, there is a feeling of matte, very delicate, very comfortable, The customer also looked particularly satisfied and praised it again and again. Because the gold ink is covered with a layer of matting oil, the paper is no longer dirty when it is reversed, and the black characters are printed very strong and clear. For the problem of not printing, only after a few days of printing, wait a few days and then reverse it. At the same time, the powder is opened a little larger and printed on one side. Later, after the book was folded, bound, and so on, Jinmo did not have obvious scratches, and finally delivered the goods very smoothly. After this successful attempt, when printing gold and silver ink, I always selectively printed a layer of bright oil or matting oil on gold and silver ink according to product characteristics and customer requirements to make gold and silver ink layers. The gloss reflects the product characteristics better, and at the same time, the surface is well protected, effectively solving various faults such as overprinting and scratching of gold and silver ink in packaging and book products, further improving product quality. In addition, if you encounter large-area spot color printing, you can also use such a process to effectively protect the surface of the ink layer, and you will also receive very satisfactory results. We are the company specializing in manufacturing hotel supplies. Main products are hand push soap dispensers, automatic Sanitizer Dispensers, paper dispensers, hand dryers, hair dryers, trash bins, etc. Most of our products have certificates like CE, UL, GS, ROHS. With moulding workshop in house and experience techinicians, we accept OEM ODM products. Trash Bins,trash can,sensor bin,touchless bin,Infrared Trash Can TAISHAN YUEXIN INDUSTRIAL GROUP LIMITED , https://www.gdmetalproducts.com